Tom Lane ea166f1146 Planner speedup hacking. Avoid saving useless pathkeys, so that path ...

comparison does not consider paths different when they differ only in
uninteresting aspects of sort order.  (We had a special case of this
consideration for indexscans already, but generalize it to apply to
ordered join paths too.)  Be stricter about what is a canonical pathkey
to allow faster pathkey comparison.  Cache canonical pathkeys and
dispersion stats for left and right sides of a RestrictInfo's clause,
to avoid repeated computation.  Total speedup will depend on number of
tables in a query, but I see about 4x speedup of planning phase for
a sample seven-table query.

2000-12-14 22:30:45 +00:00

..

_deadcode

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2000-01-26 05:58:53 +00:00

clauses.h

Reimplementation of UNION/INTERSECT/EXCEPT. INTERSECT/EXCEPT now meet the

2000-10-05 19:11:39 +00:00

cost.h

Add proofreader's changes to docs.

2000-10-05 19:48:34 +00:00

geqo_copy.h

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2000-01-26 05:58:53 +00:00

geqo_gene.h

Add:

2000-01-26 05:58:53 +00:00

geqo_misc.h

Add:

2000-01-26 05:58:53 +00:00

geqo_mutation.h

Add:

2000-01-26 05:58:53 +00:00

geqo_pool.h

Fix GEQO optimizer to work correctly with new outer-join-capable

2000-09-19 18:42:34 +00:00

geqo_random.h

Clean up bogosities in use of random(3) and srandom(3) --- do not assume

2000-08-07 00:51:42 +00:00

geqo_recombination.h

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2000-01-26 05:58:53 +00:00

geqo_selection.h

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2000-01-26 05:58:53 +00:00

geqo.h

Fix GEQO optimizer to work correctly with new outer-join-capable

2000-09-19 18:42:34 +00:00

joininfo.h

Mark functions as static and ifdef NOT_USED as appropriate.

2000-06-08 22:38:00 +00:00

pathnode.h

Planner speedup hacking. Avoid saving useless pathkeys, so that path

2000-12-14 22:30:45 +00:00

paths.h

Planner speedup hacking. Avoid saving useless pathkeys, so that path

2000-12-14 22:30:45 +00:00

plancat.h

Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias.

2000-09-29 18:21:41 +00:00

planmain.h

Restructure handling of inheritance queries so that they work with outer

2000-11-12 00:37:02 +00:00

planner.h

Restructure handling of inheritance queries so that they work with outer

2000-11-12 00:37:02 +00:00

prep.h

Restructure handling of inheritance queries so that they work with outer

2000-11-12 00:37:02 +00:00

restrictinfo.h

First cut at full support for OUTER JOINs. There are still a few loose

2000-09-12 21:07:18 +00:00

subselect.h

Ye-old pgindent run. Same 4-space tabs.

2000-04-12 17:17:23 +00:00

tlist.h

Mark functions as static and ifdef NOT_USED as appropriate.

2000-06-08 22:38:00 +00:00

var.h

Add:

2000-01-26 05:58:53 +00:00